Programmable logic controllers

Mitsubishi Electric has launched a successor to its highly successful range of programmable logic controllers (PLCs).

The FX3U range has 64 k of memory, four times more than the previous FX range, and an operating speed of 65 ns, 4.5 times faster. There are also 75 new instructions in the instruction set, simplifying programming.

‘The FX3U gives unrivalled flexibility for designers and process engineers,’ says Hugh Tasker of Mitsubishi. ‘It is a platform that encompasses a vast range of applications, both OEM and end user, for automation, positioning, process control and networking. With a list of standard features that betters anything on the market, users are really only limited by their imaginations.’

Related Articles

Tridonic has developed a lighting dashboard to supplement its connecDIM lighting-control solution. This dashboard interfaces with the connecDIM system and opens up the opportunity for the Tridonic system to integrate with the HVAC building-management system.

Star Refrigeration’s air-cooled Azanechiller has seasonal efficiency figures 50% higher than the requirement of the Eco-Design Directive and 20% higher than competing high-efficiency chillers. Its SEER (seasonal energy efficiency ratio) for comfort cooling is 5.6.These chillers use ammonia, which is presented by Star Refrigeration as avoiding the uncertainty of synthetic F-gas refrigerants, having zero GWP, and being a future-proof solution that will deliver reliable cooling for at least 20 years.

Ener-G offers a range of CHP units with NOx emissions that are five times lower than the widely accepted limit of 250 mg/m3 at 5% excess oxygen and standard atmospheric conditions. That means that NOx emissions are less than 50 mg/m3 at the same conditions. These CHP units have electrical outputs from 50 to 230 kW.

Full BEMS capability is now provided with Carrier Rental Systems’ fleet of chillers, enabling chillers on temporary cooling duty to be fully integrated into a building’s existing control system. Uses can optimise chiller performance for occupant comfort and energy consumption. It will particularly benefit temporary cooling needs in complex and critical applications such as hospital, data centres, manufacturing industry and large commercial offices.